yarn詳細入門教程
Yarn簡介
Yarn 是 Facebook, Google, Exponent 和 Tilde 開發的一款新的 JavaScript 包管理工具。就像我們可以從官方文件瞭解那樣，它的目的是解決這些團隊使用 npm 面臨的少數問題.
一鍵安裝
官網指令碼:
curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --nightly
或者:
最簡單的方法是執行：
npm install -g yarn
現在的yarn安裝頁面是這麼說的：
注意：通常情況下不建議通過npm進行安裝。npm安裝是非確定性的，程式包沒有簽名，並且npm除了做了基本的SHA1雜湊之外不執行任何完整性檢查，這給安裝系統程式帶來了安全風險。
基於這些原因，強烈建議你通過最適合於你的作業系統的安裝方法來安裝yarn。
以這種速度發展下去的話，如果yarn要宣佈他們自己的registry，讓開發者慢慢淘汰npm的話，我們一點都不會感到驚訝。
安裝成功後即可檢視版本：
yarn –version
常用命令
初始化一個新專案
yarn init
新增依賴包
yarn add [package]
yarn add [package]@[version]
yarn add [package]@[tag]
將依賴項新增到不同依賴項類別中
分別新增到 devDependencies、peerDependencies 和 optionalDependencies 類別中：
yarn add [package] --dev
yarn add [package] --peer
yarn add [package] --optional
升級依賴包
yarn upgrade [package]
yarn upgrade [package]@[version]
yarn upgrade [package]@[tag]
移除依賴包
yarn remove [package]
安裝專案的全部依賴
yarn
或者
yarn install
例如:
$ yarn install
yarn install v1.13.0-20181121.1436
warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolution inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json.
[1/4] ? Resolving packages...
[2/4] ? Fetching packages...
[3/4] ? Linking dependencies...
warning " > babel-jest@23.6.0" has unmet peer dependency "babel-core@^6.0.0 || ^7.0.0-0".
[4/4] ? Building fresh packages...
$ lerna bootstrap
lerna notice cli v3.4.3
lerna info Bootstrapping 5 packages
lerna info Installing external dependencies
lerna info Symlinking packages and binaries
lerna success Bootstrapped 5 packages
✨ Done in 271.39s.
$ yarn build
yarn run v1.13.0-20181121.1436
$ lerna run build --ignore selenium-ide-extension-boilerplate
lerna notice cli v3.4.3
lerna info filter [ '!selenium-ide-extension-boilerplate' ]
lerna info Executing command in 4 packages: "yarn run build"
$ yarn run browserify src/index.js -s browser-webdriver -o build/webdriver.js
$ /Users/jack/ui/selenium-ide/packages/browser-webdriver/node_modules/.bin/browserify src/index.js -s browser-webdriver -o build/webdriver.js
$ rollup -c
$ babel -d dist src --ignore=__test__
src/capabilities.js -> dist/capabilities.js
src/child.js -> dist/child.js
src/config.js -> dist/config.js
src/index.js -> dist/index.js
src/npm.js -> dist/npm.js
src/versioner.js -> dist/versioner.js
$ rm -rf build && env NODE_ENV=production webpack
Hash: 5f687715a247631dc1c4
Version: webpack 3.12.0
Time: 108660ms
Asset Size Chunks Chunk Names
escape.js.map 14.2 kB 6 [emitted] escape
media/selenium_blue_white32@3x.84ab23d0.svg 3.62 kB [emitted]
media/selenium-ide.9b39b00c.svg 21.8 kB [emitted]
playback.js 99.7 kB 0 [emitted] playback
record.js 39.4 kB 1 [emitted] record
neo.js 2.43 MB 2 [emitted] [big] neo
atoms.js 494 kB 3 [emitted] [big] atoms
background.js 12 kB 4 [emitted] background
polyfills.js 7.15 kB 5 [emitted] polyfills
escape.js 2.99 kB 6 [emitted] escape
playback.js.map 387 kB 0 [emitted] playback
record.js.map 162 kB 1 [emitted] record
neo.js.map 8.53 MB 2 [emitted] neo
atoms.js.map 2.23 MB 3 [emitted] atoms
background.js.map 54.8 kB 4 [emitted] background
polyfills.js.map 40.6 kB 5 [emitted] polyfills
media/selenium-ide.461193c2.ttf 7.44 kB [emitted]
vendor/global.js 825 bytes [emitted]
vendor/selenium-browserdetect.js 5.27 kB [emitted]
prompt.js 7.25 kB [emitted]
highlight.css 952 bytes [emitted]
../bootstrap.html 1.57 kB [emitted]
../manifest.json 1.74 kB [emitted]
indicator.js 694 bytes [emitted]
../indicator.html 1.03 kB [emitted]
../icons/icon128.png 5.88 kB [emitted]
../icons/icon_menu32.png 1.22 kB [emitted]
../icons/icon16.png 612 bytes [emitted]
../icons/icon_menu16.png 552 bytes [emitted]
../icons/icon_menu64.png 2.76 kB [emitted]
../icons/icon32.png 1.29 kB [emitted]
../icons/icon64.png 2.91 kB [emitted]
../index.html 315 bytes [emitted]
[133] ./content/commands-api.js 6.84 kB {0} [built]
[146] ./content/escape.js 5.11 kB {0} {6} [built]
[229] ./content/locatorBuilders.js 11.6 kB {3} [built]
[320] multi ./content/setup 28 bytes {5} [built]
[321] ./content/setup.js 1.28 kB {5} [built]
[322] multi ./content/commands-api 28 bytes {0} [built]
[385] multi ./background/background 28 bytes {4} [built]
[386] ./background/background.js 5.09 kB {4} [built]
[387] multi ./content/record 28 bytes {1} [built]
[388] ./content/record.js 19.5 kB {1} [built]
[389] ./content/record-api.js 9.7 kB {1} [built]
[390] ./content/prompt-recorder.js 2.41 kB {1} [built]
[391] multi ./content/escape 28 bytes {6} [built]
[392] multi react-hot-loader/patch ./neo/containers/Root 40 bytes {2} [built]
[396] ./neo/containers/Root/index.jsx 1.61 kB {2} [built]
+ 1075 hidden modules
Child html-webpack-plugin for "../index.html":
1 asset
[0] ../node_modules/html-webpack-plugin/lib/loader.js!./neo/index.html 720 bytes {0} [built]
+ 3 hidden modules
lerna success run Ran npm script 'build' in 4 packages:
lerna success - browser-webdriver
lerna success - selenium-ide-extension
lerna success - selenium-side-runner
lerna success - selianize
✨ Done in 130.43s.
$ npm start
> selenium-ide@ start /Users/jack/ui/selenium-ide
> cd packages/selenium-ide && yarn start
yarn run v1.13.0-20181121.1436
$ env NODE_ENV=test webpack-dev-server --hot
Project is running at http://localhost:8081/
webpack output is served from /assets/
Hash: a6db07ced022ebcba304
Version: webpack 3.12.0
Time: 43408ms
Asset Size Chunks Chunk Names
prompt.js 7.25 kB [emitted]
media/selenium_blue_white32@3x.84ab23d0.svg 3.62 kB [emitted]
media/selenium-ide.9b39b00c.svg 21.8 kB [emitted]
playback.js 617 kB 0 [emitted] [big] playback
record.js 298 kB 1 [emitted] [big] record
neo.js 18.7 MB 2 [emitted] [big] neo
atoms.js 5.16 MB 3 [emitted] [big] atoms
background.js 988 kB 4 [emitted] [big] background
polyfills.js 957 kB 5 [emitted] [big] polyfills
escape.js 898 kB 6 [emitted] [big] escape
highlight.css 952 bytes [emitted]
vendor/global.js 825 bytes [emitted]
vendor/selenium-browserdetect.js 5.27 kB [emitted]
media/selenium-ide.461193c2.ttf 7.44 kB [emitted]
../bootstrap.html 1.57 kB [emitted]
../indicator.html 1.03 kB [emitted]
indicator.js 694 bytes [emitted]
../manifest.json 1.74 kB [emitted]
../icons/icon_menu64.png 2.76 kB [emitted]
../icons/icon_menu32.png 1.22 kB [emitted]
../icons/icon128.png 5.88 kB [emitted]
../icons/icon_menu16.png 552 bytes [emitted]
../icons/icon16.png 612 bytes [emitted]
../icons/icon64.png 2.91 kB [emitted]
../icons/icon32.png 1.29 kB [emitted]
../index.html 315 bytes [emitted]
[40] (webpack)-dev-server/client?http://localhost:8081 7.93 kB {2} {3} {4} {5} {6} [built]
[41] (webpack)/hot/dev-server.js 1.61 kB {2} {3} {4} {5} {6} [built]
[170] ./src/content/commands-api.js 7.77 kB {0} [built]
[183] ./src/content/escape.js 5.96 kB {0} {6} [built]
[432] multi (webpack)-dev-server/client?http://localhost:8081 webpack/hot/dev-server ./content/setup 52 bytes {5} [built]
[433] ./src/content/setup.js 1.36 kB {5} [built]
[434] multi (webpack)-dev-server/client?http://localhost:8081 webpack/hot/dev-server ./content/commands-api 52 bytes {0} [built]
[497] multi (webpack)-dev-server/client?http://localhost:8081 webpack/hot/dev-server ./background/background 52 bytes {4} [built]
[498] ./src/background/background.js 6.57 kB {4} [built]
[499] multi (webpack)-dev-server/client?http://localhost:8081 webpack/hot/dev-server ./content/record 52 bytes {1} [built]
[500] ./src/content/record.js 23.2 kB {1} [built]
[503] multi (webpack)-dev-server/client?http://localhost:8081 webpack/hot/dev-server ./content/escape 52 bytes {6} [built]
[504] multi (webpack)-dev-server/client?http://localhost:8081 webpack/hot/dev-server react-hot-loader/patch ./neo/containers/Root 64 bytes {2} [built]
[505] ./node_modules/react-hot-loader/patch.js 40 bytes {2} [built]
[600] ./src/neo/containers/Root/index.jsx 1.82 kB {2} [built]
+ 1163 hidden modules
Child html-webpack-plugin for "../index.html":
1 asset
[0] ./node_modules/html-webpack-plugin/lib/loader.js!./src/neo/index.html 720 bytes {0} [built]
[1] ./node_modules/html-webpack-plugin/node_modules/lodash/lodash.js 540 kB {0} [built]
[2] (webpack)/buildin/global.js 509 bytes {0} [built]
[3] (webpack)/buildin/module.js 517 bytes {0} [built]
webpack: Compiled successfully.
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